US2390830A

US2390830A - Stabilized solutions of metallic

Info

Publication number: US2390830A
Authority: US
Publication date: 1945-12-11
Anticipated expiration: 1962-12-11

Description

Patented Dec. 11, 1945 STABILIZED SOLUTIONS OF METALLIC SALTS Stanley B. Elliott, Cleveland, Ohio, assignor to Ferro Enamel Corporation, Cleveland, Ohio, a

corporation of Ohio No Drawing. Application April 28, 1943,

. Serial No. 484,876

1 Claim.

This invention relates as indicated to stabilized solutions of metallic salts, and more particularly to solutions used in or as paints and in which the metallic salts are used as driers.

These driers are generally, in their pure state, solids so that their commercial occurrence are in the form of liquid solutionsin mineral spirits. These solutions are than added to the appropriate paint or varnish base, and it is accordingly a further requisite of such solutions that they be capable of incorporation in the paint body by a simple mixing operation.

In order to be thus capable of ready admixture with the paint or varnish body, the driers, with a minimum amount of a solvent such as mineral spirits, should have a relatively low viscosity so as to reduce to a minimumthe time and effort required for blending in such body.

The driers, either before or after admixture with the paint or varnish vehicle in which they are designed foruse, come in contact with minor amounts of water present generally as a foreign material in the container. Such water generally results in a decomposition of the driers, unless some stabilizing addition agent is used.

It is, therefore, a principal object of this invention to provide stabilizing agents which are effective not only to thus prevent decomposition, but which also decrease the viscosity of the solution of the drier, so that a maximum metal content may be incorporated in the ultimate paint or varnish composition with a minimum of mixing time and effort.

Other objects of the invention will appear as the description proceeds.

To the accomplishment of the foregoing and related ends, said invention then comprises the features hereinafter fully described and particularly pointed out in the claim, the following description setting forth in detail certain illustrative embodiments of the invention, these being indicative, however, of but a few of the various ways in which the principle of the invention may be employed.

\ THE DRIERS The class of driers to which this invention is applicable are all water insoluble metal salts of certain organic acids. The metals which may be used in the preparation of such salts include the following:

Table 1 Heavy metals: Iron Lead Copper Zinc Cadmium Manganese* Mercury Cobalt Nickel Alkaline earth metals:

Calcium Barium Strontium The ones marked thus 0) are preferred for various reasons such as their cost, commercial availability, and general effectiveness.

The acids which may be used with any of the metals given in Table 1 above in the preparation of the metallic salts or soaps which comprise the driers of this invention include the following representative acids:

Table 2 Aliphatic acids:

Saturated acids:

Stearic acid Palmitic acid Lauric acid Unsaturated acids:

Linoleic acid Linolenic acid Oleic acid Cycloaliphatic acids: Naphthenic acid Complex acids:

Rosin oil acids Rosin acids Tall oil acids of this invention. For best results, however, only those resultant salts or soaps which are soluble in a non-polar solvent such as any of the following, viz:

Table 3 Xylene Stoddards solvent Benzene V. M. 8: P. naphtha Toluene Mineral spirits should be used.

, In the following table are given a number of specific examples of driers which will be found highly useful, and to which this invention particularly relates:

1 Table 4 THE ADDITION AGENT Sorbitol (hexahydric alcohol) This acts as a stabilizing agent for the solutions of the driers, and also favorably influences the viscosity. As pointed out above, one of the desirable characteristics of metallic soap solutions used as driers in organic finishes is that they have a viscosity low enough so that the solution may be poured and dispersed in oils with a minimum of effort. The amount of diluent, i. e., material other than the soap itself, which may be used is generally fixed so that it becomes important to select the proper diluent for this purpose.

The concentration within which the addition agent should be used in the liquid mineral spirits solution of the metallic salts above identified will vary from about 1% to about 10% .by weight. It will be found that concentrations in the range of from about 2% to about 5% by weight will produce best results.

Other modes of app y t e P p e of the invention may be employed, change being made as regards the details described, provided the features stated in the following claim or the equivalent of such be employed.

I, therefore, particularly point out and distinctly claim as my invention:

A new composition of matter comprising in solution form (a) a major proportion of a water insoluble drier soap of a metal of the class consisting of the heavy metals and the alkaline earth metals, (b) a minor amount of sorbitol, and (c) a non-polar solvent. STANLEY B. ELLIOTT.